They can be VERY pre-emptive in their actions .[/quote]
Can you please explain this to me.
Typically, CO's, no matter how much they respect you as an Alpha, will act on their instincts and intuition, regardless of what your want/don't want them to do.
I'm not going to say that they will "act and ask questions later" because they WON'T. If they act, they will question it because at the time they felt what they did was justified for the situation.
That mentality, on top of the fact that these are BIG dogs is a recipe for a dog that not many people can handle, or should even own, in my eyes.
I'm not trying to deter you from getting one because of your ability to handle them. I have no knowledge of your abilities and experience with dogs.
The main reason I'm trying to steer you away from COs is because of your climate. Here, I'll just say that Igmuska and ALeksa's posts are spot-on and you should heed their words as they both know what they're talking about and I would have made the same points as they did.